Physics of Proximity Josephson Sensor
arXiv:0906.5470 · doi:10.1063/1.3354042
Abstract
We study the proximity Josephson sensor (PJS) in both bolometric and calorimetric operation and optimize it for different temperature ranges between 25 mK and a few Kelvin. We investigate how the radiation power is absorbed in the sensor and find that the irradiated sensor is typically in a weak nonequilibrium state. We show in detail how the proximity of the superconductors affects the device response: for example via changes in electron-phonon coupling and out-of-equilibrium noise. In addition, we estimate the applicability of graphene as the absorber material.
13 pages, 11 figures, submitted to Journal of Applied Physics, v2: Addition of a new section discussing the radiation coupling to the device, several minor changes
References in corpus (8)
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Cited by in corpus (12)
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- Detection of zeptojoule microwave pulses using electrothermal feedback in proximity-induced Josephson junctions
- Graphene-based Josephson junction single photon detector
- Proximity coupling in superconductor-graphene heterostructures
- Voltage drop across Josephson junctions for Lévy noise detection
- Josephson-Threshold Calorimeter
- Microwave nanobolometer based on proximity Josephson junctions
- Non-linear critical current thermal response of an asymmetric Josephson tunnel junction
- Nanoscale Quantum Calorimetry with Electronic Temperature Fluctuations
- Josephson photodetectors via temperature-to-phase conversion
- Proximity SQUID single photon detector via temperature-to-voltage conversion
- Quasiparticle entropy in superconductor/normal metal/superconductor proximity junctions in the diffusive limit